Within both a method for controlling microelectronic fabrication production and a system for controlling microelectronic fabrication production there is developed and evaluated for a plurality of microelectronic fabrication facilities a plurality of demand, allocation and output management plans prior to assigning and entering within at least one microelectronic fabrication facility a microelectronic fabrication order. The development and evaluation of the plurality of demand, allocation and output management plans provides for enhanced flexibility when assigning and entering the microelectronic fabrication order.